Anti-counterfeiting coding element and manufacturing method of anti-counterfeiting coding element

Abstract

The invention provides an anti-counterfeiting coding element and a manufacturing method thereof. The anti-counterfeiting coding element comprises a base material, and the base material is provided with a first area, a second area and a third area; the fluctuating structure layer is arranged on the base material, and the fluctuating structure layer is at least arranged in the first area and the third area; the first functional layer is arranged in the first area, the first functional layer and the fluctuating structure layer in the first area act together to enable the first area to have the appearance which can be changed along with the observation angle, and the difference between the first area and the second area forms a coding pattern; the second functional layer is arranged in the third area, and the second functional layer and the fluctuating structure layer in the third area act together so that the surface of the second area can have the appearance which can be changed along with the angle. According to the invention, the problem that the anti-counterfeiting coding element is poor in anti-counterfeiting performance and easy to copy in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of anti-counterfeiting equipment, and in particular to an anti-counterfeiting coding element and a method for manufacturing the anti-counterfeiting coding element. Background Art

[0002] Counterfeit and imitation products have seriously damaged the legitimate rights and interests of product producers and users. With the rapid development of the economy, products on the market have become more abundant and diverse, and the demand for authenticity identification and production link traceability has become stronger.

[0003] At present, anti-counterfeiting coding elements such as text, barcode and QR code containing product information or numbers are widely used in the production, transportation, warehousing, sales, use, traceability and anti-counterfeiting of products. They have the advantages of being readable by the naked eye or machine and easy to integrate. However, in the prior art, variable coding patterns such as text, barcode and QR code are realized by variable printing equipment such as inkjet, which can be easily copied directly and have a low imitation threshold. Their anti-counterfeiting ability needs to be enhanced.

[0004] That is to say, the anti-counterfeiting coding element in the prior art has the problem of poor anti-counterfeiting performance and being easily imitated. Summary of the invention

[0005] The main purpose of the present invention is to provide an anti-counterfeiting coding element and a method for manufacturing the anti-counterfeiting coding element, so as to solve the problem that the anti-counterfeiting coding element in the prior art has poor anti-counterfeiting performance and is easy to be imitated.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided an anti-counterfeiting coding element, which includes: a substrate, the substrate having a first area, a second area and a third area; an undulating structure layer, the undulating structure layer is arranged on the substrate, and the undulating structure layer is arranged at least in the first area and the third area; a first functional layer, the first functional layer is arranged in the first area, the first functional layer and the undulating structure layer in the first area cooperate to make the first area have an appearance that varies with the observation angle, and the difference between the first area and the second area forms a coding pattern; a second functional layer, the second functional layer is arranged in the third area, the second functional layer and the undulating structure layer in the third area cooperate to make the surface of the third area have an appearance that varies with the angle.

[0007] Furthermore, the appearance that changes with the observation angle includes at least one of color changing with the observation angle, brightness changing with the observation angle, pattern shape changing with the observation angle, pattern position changing with the observation angle, and pattern angle changing with the observation angle.

[0008] Further, the hollowing index of the undulating structure layer in the first region is different from that of the undulating structure layer in the third region.

[0009] The hollowing index of the undulating structural layer refers to the difficulty of removing the functional layer in a specific process. The larger the hollowing index, the easier it is to remove the functional layer combined with the undulating structural layer in a specific process. The hollowing index of the undulating structural layer depends on the structural parameters in the undulating structural layer. Generally, the hollowing index can be characterized by structural parameters such as structural depth, specific area, and specific volume.

[0010] Further, the first functional layer and the second functional layer include at least one same material.

[0011] Furthermore, the first functional layer and the second functional layer are made of the same material.

[0012] Furthermore, the light emitted by the point light source forms a reconstructed pattern after passing through the second area.

[0013] Further, the appearance of the first region as it changes with the viewing angle is associated with the appearance of the third region as it changes with the viewing angle.

[0014] Furthermore, the first functional layer and / or the second functional layer includes at least one of a metal layer, a dielectric layer, and a magnetic layer.

[0015] Furthermore, the first functional layer and / or the second functional layer is a single metal layer; or the first functional layer and / or the second functional layer is a single dielectric layer; or the first functional layer and / or the second functional layer is a multi-layer dielectric layer; or the first functional layer and / or the second functional layer is formed by stacking a metal layer, a dielectric layer, and a metal layer.

[0016] Furthermore, the first area and the second area have different anti-counterfeiting properties.

[0017] Furthermore, the difference between the first region and the second region includes at least one of a difference in appearance, a difference in light transmittance, and a difference in magnetism.

[0018] Furthermore, the coding pattern includes at least one of numbers, letters, barcodes, and QR codes.

[0019] Furthermore, when there are multiple anti-counterfeiting coding elements, coding patterns of at least two anti-counterfeiting coding elements are different.

[0020] Furthermore, the coding pattern can be customized.

[0021] Furthermore, the second region also has an undulating structure layer, and the undulating structure layer in the second region has a different hollowing index from the undulating structure layer in the third region.

[0022] Further, the second region is continuously disposed around the circumference of the first region and the third region.

[0023] According to another aspect of the present invention, a method for manufacturing an anti-counterfeiting coding element is provided, and the anti-counterfeiting coding element is manufactured by the method for manufacturing an anti-counterfeiting coding element, and the method for manufacturing an anti-counterfeiting coding element comprises: forming an undulating structure layer on a substrate, wherein the hollowing index of the first area, the part of the second area close to the first area, and the third area is smaller than the hollowing index of the second area close to the third area; forming a functional layer; forming a protective layer; after forming the protective layer, placing the structure in an atmosphere capable of reacting with the protective layer and the functional layer until part or all of the functional layer located in the second area is removed; after forming the functional layer, using a light beam and / or a particle beam to remove the functional layer on the part of the second area close to the first area.

[0024] Applying the technical solution of the present invention, the anti-counterfeiting coding element includes a substrate, a corrugated structural layer, a first functional layer and a second functional layer, the substrate having a first area, a second area and a third area; the corrugated structural layer is arranged on the substrate, and the corrugated structural layer is arranged at least in the first area and the third area; the first functional layer is arranged on the corrugated structural layer in the first area, so that the first area has an appearance that varies with the observation angle, and the difference between the first area and the second area forms a coding pattern; the second functional layer is arranged on the corrugated structural layer in the third area, so that the surface of the third area has an appearance that varies with the angle.

[0025] The undulating structure layer and the first functional layer are arranged in the first region so that the first region has an appearance that varies with the viewing angle, thereby increasing the anti-counterfeiting effect. No functional layer is arranged in the second region so that the difference between the first region and the second region forms a coding pattern, thereby further increasing the anti-counterfeiting effect. The undulating structure layer and the second functional layer are arranged in the third region so that the surface of the third region has an appearance that varies with the angle, thereby further increasing the anti-counterfeiting effect of the anti-counterfeiting coding element. The anti-counterfeiting coding element in the present application has a variety of anti-counterfeiting features, thereby effectively increasing the anti-counterfeiting performance of the anti-counterfeiting coding element and reducing the risk of the anti-counterfeiting coding element being counterfeited. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0027] Figure 1 The structure diagram of the anti-counterfeiting coding element of the first embodiment of the present invention is shown;

[0028] Figure 2 The structure diagram of the anti-counterfeiting coding element of the second embodiment of the present invention is shown;

[0029] Figure 3 A diagram showing the manufacturing process of the anti-counterfeiting coding element according to the third embodiment of the present invention;

[0030] Figure 4 The diagram shows the manufacturing process of the anti-counterfeiting coding element according to the fourth embodiment of the present invention.

[0031] The above drawings include the following reference numerals:

[0032] 10. First region; 20. First functional layer; 30. Second region; 50. Third region; 60. Concave and convex structure layer; 70. Second functional layer; 80. Protective layer; 90. Transparent layer; 100. Substrate. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0034] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0035] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0036] In order to solve the problem in the prior art that the anti-counterfeiting coding element has poor anti-counterfeiting performance and is easily imitated, the present invention provides an anti-counterfeiting coding element and a method for manufacturing the anti-counterfeiting coding element.

[0037] like Figures 1 to 4 As shown, the anti-counterfeiting coding element includes a substrate 100, a corrugated structure layer 60, a first functional layer 20 and a second functional layer 70, the substrate 100 has a first area 10, a second area 30 and a third area 50; the corrugated structure layer 60 is arranged on the substrate 100, and the corrugated structure layer 60 is arranged at least in the first area 10 and the third area 50; the first functional layer 20 is arranged on the corrugated structure layer 60 in the first area 10, so that the first area 10 has an appearance that is variable with the observation angle, and the difference between the first area 10 and the second area 30 forms a coding pattern; the second functional layer 70 is arranged on the corrugated structure layer 60 in the third area 50, so that the surface of the third area 50 has an appearance that is variable with the angle.

[0038] The undulating structure layer 60 and the first functional layer 20 are arranged in the first area 10, so that the first area 10 has an appearance that varies with the viewing angle, thereby increasing the anti-counterfeiting effect. No functional layer is arranged in the second area 30, so that the difference between the first area 10 and the second area 30 forms a coding pattern, further increasing the anti-counterfeiting effect. The undulating structure layer 60 and the second functional layer 70 are arranged in the third area 50, so that the surface of the third area 50 has an appearance that varies with the angle, thereby increasing the anti-counterfeiting effect of the anti-counterfeiting coding element again. The anti-counterfeiting coding element in the present application has a variety of anti-counterfeiting features, which effectively increases the anti-counterfeiting performance of the anti-counterfeiting coding element and reduces the risk of the anti-counterfeiting coding element being counterfeited.

[0039] It should be noted that the coding pattern is directly formed by the difference between the first area 10 and the second area 30. For example, there is a first functional layer 20 in the first area 10, and there is no functional layer in the second area 30, so that the appearance between the first area 10 and the second area 30 is different, so as to directly form the coding pattern.

[0040] In the present application, due to the presence of the undulating structure layer 60 and the first functional layer 20, the undulating structure layer 60 and the second functional layer 70, the appearance of the anti-counterfeiting coding element changes with the observation angle, which is significantly different from copying, printing, and the like, and the coded information cannot be forged or altered by conventional means.

[0041] In the third region 50, the relief structure layer 60 and the second functional layer 70 are precisely aligned, that is, the deviation of the relative positions is less than 10 micrometers.

[0042] Specifically, the appearance that changes with the observation angle includes at least one of color changing with the observation angle, brightness changing with the observation angle, pattern shape changing with the observation angle, pattern position changing with the observation angle, and pattern angle changing with the observation angle.

[0043] In the present application, the appearance that changes with the observation angle includes at least one optical anti-counterfeiting feature of holography, light-changing, dynamic, relief or microlens.

[0044] In the present application, the appearance that changes with the observation angle of the first area 10 is an appearance characteristic jointly formed by the undulating structure layer 60 and the first functional layer 20, and the appearance that changes with the observation angle of the third area 50 is an appearance characteristic jointly formed by the undulating structure layer 60 and the second functional layer 70. The combination of the undulating structure and the functional layer can integrate conventional anti-counterfeiting technologies, such as diffraction-based optical anti-counterfeiting technologies such as holograms, reflection-based optical anti-counterfeiting technologies such as micro-mirrors, and sub-wavelength microstructure-based optical anti-counterfeiting technologies such as structural colors.

[0045] Specifically, the hollowing index of the undulating structure layer 60 in the first region 10 is different from that of the undulating structure layer 60 in the third region 50. In this embodiment, the first region 10 and the undulating structure layer 60 are not precisely aligned, that is, the deviation of the relative position cannot be controlled within a range of less than 10 microns, and generally the deviation of the relative position of the non-precise alignment is less than 1 mm.

[0046] Specifically, the hollowing index of the undulating structure layer 60 refers to the difficulty of removing the functional layer in a specific process. The larger the hollowing index, the easier it is to remove the functional layer combined with the undulating structure layer 60 in a specific process. The hollowing index of the undulating structure layer 60 depends on the structural parameters in the undulating structure layer 60. Generally, the hollowing index can be characterized by structural parameters such as structural depth, specific area, and specific volume.

[0047] Optionally, the first functional layer 20 and the second functional layer 70 include at least one of the same materials. Some of the materials in the first functional layer 20 and the second functional layer 70 may be the same, so that the first functional layer 20 and the second functional layer 70 have similar functions.

[0048] Preferably, the first functional layer 20 and the second functional layer 70 are made of the same material, so that the first functional layer 20 and the second functional layer 70 have the same function and are convenient for manufacturing the first functional layer 20 and the second functional layer 70 .

[0049] Specifically, the boundary of the second functional layer 70 is the boundary of the third region 50. That is, all positions in the third region 50 have the undulating structure layer 60 and the second functional layer 70 to ensure the consistency of the appearance characteristics in the third region 50, so that the shape of the third region 50 serves as an anti-counterfeiting feature.

[0050] Optionally, the first functional layer 20 and the second functional layer 70 are processed and formed in the same process. This arrangement reduces the processing steps, enables the first functional layer 20 and the second functional layer 70 to be formed at the same time, and reduces the production cost.

[0051] In the present application, the light emitted by the point light source passes through the second area 30 to form a reconstructed pattern.

[0052] In an optional embodiment, when the light emitted by the point light source illuminates the second area 30, when the human eye observes the point light source through the second area 30, the reproduced pattern is directly observed in the field of vision of the human eye.

[0053] In an optional embodiment, when the light emitted by the point light source illuminates the second area 30, it is transmitted or reflected to project a reconstructed pattern on the object.

[0054] In the present application, the appearance of the first area 10 that changes with the observation angle is associated with the appearance of the third area 50 that changes with the observation angle. The appearance association of the first area 10 and the third area 50 means that the appearances of the two areas change synchronously, such as the positions of the two areas change synchronously, the colors of the two areas change synchronously, the pattern shapes of the two areas change synchronously, the pattern angles of the two areas change synchronously, etc.

[0055] Optionally, the first functional layer 20 includes at least one of a metal layer, a dielectric layer, and a magnetic layer.

[0056] Optionally, the second functional layer 70 includes at least one of a metal layer, a dielectric layer, and a magnetic layer.

[0057] Specifically, the first functional layer 20 can be a single metal layer, a single dielectric layer, a single magnetic layer, or it can be formed by alternating metal layers and dielectric layers, such as metal layer-dielectric layer-metal layer, or it can be multiple dielectric layers, such as high refractive index dielectric layers and low refractive index dielectric layers alternately stacked.

[0058] When the first functional layer 20 and / or the second functional layer 70 is "metal layer-dielectric layer-metal layer", a light-variable feature is formed. The light-variable feature can be observed in different colors at different observation angles, and has the effect of changing the color with the observation angle.

[0059] When the first functional layer 20 and / or the second functional layer 70 are high refractive index medium layers and low refractive index medium layers alternately stacked, optically variable features are also formed.

[0060] Specifically, the second functional layer 70 can be a single metal layer, a single dielectric layer, a single magnetic layer, or it can be formed by alternating metal layers and dielectric layers, such as metal layer-dielectric layer-metal layer, or it can be multiple dielectric layers, such as high refractive index dielectric layers and low refractive index dielectric layers alternately stacked.

[0061] The single metal layer may be an aluminum coating.

[0062] Optionally, the first functional layer 20 may further include a reflective layer.

[0063] Optionally, the second functional layer 70 may further include a reflective layer.

[0064] In the present application, the first region 10 and the second region 30 have different anti-counterfeiting characteristics. That is, the anti-counterfeiting feature of the first region 10 is different from the anti-counterfeiting feature of the second region 30, so that the anti-counterfeiting coding element has diversified anti-counterfeiting features.

[0065] Optionally, the difference between the first region 10 and the second region 30 includes at least one of a difference in appearance, a difference in light transmittance, and a difference in magnetism.

[0066] The difference in appearance between the first region 10 and the second region 30 may be that the first region 10 and the second region 30 have different appearance properties such as shape, color, brightness, gloss, etc. Of course, as long as there is a difference in appearance properties, it means that the first region 10 and the second region 30 have different appearances. For example, if the first region 10 has a metallic appearance and the second region 30 has a transparent appearance, it can be said that the two have different appearances.

[0067] Specifically, the difference in appearance between the first region 10 and the second region 30 is mainly caused by the presence or absence of a functional layer. In the present application, the first region 10 has a first functional layer 20, while the second region 30 has no functional layer. Because the first region 10 has the first functional layer 20, when the first functional layer 20 is directly disposed on a flat surface, the appearance of the first region 10 is a mirror effect or a mirror-like effect; when the first functional layer 20 is directly disposed on an undulating surface, the appearance of the first region 10 may have different brightness and / or color distributions depending on the viewing angle; when the first functional layer 20 is a two-layer or multi-layer coating, the appearance of the first region 10 may have different colors depending on the viewing angle. The second region 30 has no functional layer, and thus the second region 30 has a transparent appearance or an appearance below the undulating structure layer.

[0068] When the difference between the first area 10 and the second area 30 is the difference in light transmittance, it means that when observed in transmission, the first area 10 and the second area 30 have different light transmittance properties, and the coding pattern can be seen. Transmission observation means that the observation position and the light source are on different sides of the anti-counterfeiting coding element.

[0069] When the difference between the first region 10 and the second region 30 is a difference in magnetic properties, the encoding patterns of the first region 10 and the second region 30 obtained by the corresponding magnetic device sides are different.

[0070] Specifically, the coding pattern includes at least one of numbers, letters, barcodes, and two-dimensional codes, wherein the two-dimensional code may be a common two-dimensional code or a QR (Quick Response) code.

[0071] Specifically, when there are multiple anti-counterfeiting coding elements, the coding patterns of at least two of the anti-counterfeiting coding elements are different. The coding patterns of at least two anti-counterfeiting coding elements are different. When making the anti-counterfeiting coding element, multiple anti-counterfeiting coding elements are made together on the same substrate 100, and in the process of making, the coding patterns of at least two anti-counterfeiting coding elements are different. Of course, the coding patterns of the multiple anti-counterfeiting coding elements can also be different. Since the coding pattern is only caused by the presence or absence of a functional layer between the first area 10 and the second area 30, it does not increase the difficulty of making the anti-counterfeiting coding element.

[0072] Optionally, the coding pattern can be customized. The coding pattern can be a special pattern designed according to specific usage needs. Of course, each coding pattern can be unique.

[0073] It should be noted that the coding pattern can be customized to include the same batch of anti-counterfeiting coding elements having different coding patterns.

[0074] In an optional embodiment, the first functional layer 20 in the first region 10 is directly disposed on the substrate 100, or the relief structure layer 60 is only in the third region 50. Meanwhile, the first functional layer 20 and the second functional layer 70 are the same structure layer.

[0075] In another optional embodiment, the second region 30 further has an undulating structure layer 60 , and the hollowing index of the undulating structure layer 60 in the second region 30 is different from that of the undulating structure layer 60 in the third region 50 .

[0076] Optionally, when the undulating structure layer 60 is a periodic striped undulating structure, the undulating structure layer 60 cooperates with the first functional layer 20 and / or the second functional layer 70 to form a holographic feature. The holographic feature can be observed as a shining rainbow color at a specific angle, and the rainbow color is observed to change rapidly when the observation angle is slightly changed. The holographic feature has the effect of changing the color and the brightness distribution with the observation angle.

[0077] A series of reflective surfaces with characteristic orientations are formed in the first area 10 and / or the third area 50, or a series of holographic stripes with specific periods and orientations are combined to form dynamic features and / or relief effects. The dynamic effect and / or relief effect can observe different brightness distributions at different observation angles, and these brightness distributions can also form patterns, and the patterns present different shapes, sizes, and angles at different observation angles. The dynamic effect and / or relief effect has the effects of brightness distribution that changes with the observation angle, pattern shape that changes with the observation angle, pattern position that changes with the observation angle, and pattern angle that changes with the observation angle.

[0078] In an optional embodiment, the anti-counterfeiting coding element further includes a sampling layer, which is disposed on the first functional layer 20 and the second functional layer 70, and the sampling layer can sample the patterns on the first functional layer 20 and the second functional layer 70 to form microlens features. The microlens features have the effects of changing the pattern shape, changing the pattern position, and changing the pattern angle with the observation angle.

[0079] exist Figure 1 In the particular embodiment shown, the second region 30 is disposed continuously around the periphery of the first region 10 and the third region 50 .

[0080] In the present application, the above-mentioned anti-counterfeiting coding element is made by a method for making an anti-counterfeiting coding element, and the method for making an anti-counterfeiting coding element includes: forming an undulating structure layer 60 on a substrate 100, wherein the hollowing index of the first area 10, the part of the second area 30 close to the first area 10, and the third area 50 is less than the hollowing index of the second area 30 close to the third area 50; forming a functional layer; forming a protective layer 80; after forming the protective layer 80, placing the above-mentioned structure in an atmosphere that can react with the protective layer 80 and the functional layer until part or all of the functional layer located in the second area 30 is removed; after forming the functional layer, using a light beam and / or a particle beam to remove the functional layer on the part of the second area 30 close to the first area 10.

[0081] Embodiment 1

[0082] exist Figure 1 In the specific embodiment shown, the anti-counterfeiting coding element includes a first area 10, a second area 30 and a third area 50, and the coding pattern is a combination of letters and numbers.

[0083] Embodiment 2

[0084] exist Figure 2 In the specific embodiment shown, the anti-counterfeiting coding element includes a first area 10, a second area 30 and a third area 50, and the coding pattern is a two-dimensional code.

[0085] Embodiment 3

[0086] exist Figure 3 In the specific embodiment shown, the first region 10, the second region 30 and the third region 50 all have an undulating structure layer 60, and the first functional layer 20 in the first region 10 and the second functional layer 70 in the third region 50 are the same layer. For the convenience of description, the first functional layer 20 and the second functional layer 70 are collectively referred to as functional layers. First, the first region 10, the second region 30 and the third region 50 are divided on the substrate 100.

[0087] Step d1: forming a relief structure layer 60 on the substrate 100 , wherein the hollowing index of the relief structure layer 60 in the third region 50 is smaller than the hollowing index of the relief structure layer 60 in the second region 30 ;

[0088] Step d2: forming a functional layer on the undulating structure layer 60;

[0089] Step d3: forming a protective layer 80 on the functional layer, wherein the thickness of the protective layer 80 in the first region 10 is greater than the thickness of the protective layer 80 in the second region 30 and the third region 50;

[0090] Step d4: placing the structure in an atmosphere capable of reacting with the functional layer until the functional layer in the second region 30 is partially or completely removed;

[0091] Step d5: adding a transparent layer 90, wherein the transparent layer 90 is a transparent film or a transparent coating;

[0092] Step d6: Transferring to another substrate 100 .

[0093] Among them, the protective layer 80 can be made once or twice. When the protective layer 80 is made twice, a protective layer 80 with uniform thickness is first formed on all areas, and then an additional protective layer 80 is formed on the first area 10. It is also possible to first form an additional layer on the first area 10, and then form the protective layer 80 on all areas. The advantage of making it once is that there are fewer processes, and the advantage of making it twice is that the advantages of different technologies can be brought into play. For example, the protective layer 80 can be formed on all areas by printing and coating, which takes advantage of high coating efficiency. The additional coating on the first area 10 can use digital printing technology such as inkjet, which takes advantage of the customizability of digital printing.

[0094] The thickness of the protective layer 80 in the first area 10 is greater than that in other areas, which may cause printing alignment problems during implementation, making it difficult to accurately align the position of the first area 10 with the microstructure on the undulating structure layer 60 .

[0095] The hollowing index of the undulating structure layer 60 in the third region 50 is smaller than the hollowing index of the undulating structure layer 60 in the second region 30. Since the hollowing index of the second region 30 is larger, the functional layer on the second region 30 can be removed.

[0096] The third region 50 retains the functional layer due to the hollowing index of the undulating structure layer 60 , and the position of the third region 50 is precisely aligned with the microstructure on the undulating structure layer 60 .

[0097] Since the undulating structures of the first region 10 and the third region 50 are copied from the same original plate, the undulating structures of the first region 10 and the third region 50 have a precise positional correlation. Therefore, in this embodiment, the appearance of the first region 10 that varies with the observation angle is correlated with the appearance of the third region 50 that varies with the observation angle, and these correlations include the relative positions of the patterns, relative brightness relationships, etc.

[0098] Embodiment 4

[0099] The difference from the third embodiment is that some steps of the manufacturing method are different.

[0100] exist Figure 4In the specific embodiment shown, since the same original plate and functional layer manufacturing method are used, after the functional layer is formed in step d2, the semi-finished products of different anti-counterfeiting coding elements are the same.

[0101] Step d3: When forming the protective layer 80, the protective layer 80 in the first area 10 is thicker. The first areas 10 of different anti-counterfeiting coding elements have different shapes. Therefore, after step d3, the thickened area of ​​the protective layer 80 also has different shapes accordingly.

[0102] Step d4: Place the above structure in an atmosphere that can react with the functional layer until part or all of the functional layer located in the second area 30 is removed. Since the first area 10 has a thicker protective layer 80, the functional layer is retained, and different anti-counterfeiting coding elements have first areas 10 of different shapes, and the corresponding shapes of the first functional layer 20 are also different, and the readable elements formed have different coding information. The third area 50 is also retained because the parameters of the microstructure are conducive to the thinner protective layer 80 to play a role, so the shape of the third area 50 is determined by the original plate of the undulating structure, and different anti-counterfeiting coding elements have the same third area 50. The second area 30 is removed by reaction to form a hollow appearance.

[0103] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0104] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0105] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0106] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An anti-counterfeiting coding element, characterized in that: The anti-counterfeiting coding element comprises: A substrate (100), wherein the substrate (100) has a first region (10), a second region (30), and a third region (50); An undulating structure layer (60), wherein the undulating structure layer (60) is disposed on the substrate, and the undulating structure layer (60) is disposed at least in the first region (10) and the third region (50); a first functional layer (20), the first functional layer (20) being arranged in the first region (10) so that the first region has an appearance that varies with viewing angle, the difference between the first region (10) and the second region (30) forming a coding pattern; A second functional layer (70), wherein the second functional layer (70) is disposed in the third region (50) so that a surface of the third region (50) has an appearance that varies with angles.

2. The anti-counterfeiting coding element according to claim 1, characterized in that: The appearance that changes with the observation angle includes at least one of color changing with the observation angle, brightness changing with the observation angle, pattern shape changing with the observation angle, pattern position changing with the observation angle, and pattern angle changing with the observation angle.

3. The anti-counterfeiting coding element according to claim 1, characterized in that: The hollowing index of the undulating structure layer (60) in the first region (10) is different from that of the undulating structure layer (60) in the third region (50).

4. The anti-counterfeiting coding element according to claim 1, characterized in that: The first functional layer (20) and the second functional layer (70) include at least one same material.

5. The anti-counterfeiting coding element according to claim 4, characterized in that: The first functional layer (20) and the second functional layer (70) are made of the same material.

6. The anti-counterfeiting coding element according to claim 1, characterized in that: Light emitted from the point light source passes through the second area (30) to form a reconstructed pattern.

7. The anti-counterfeiting coding element according to claim 1, characterized in that: The appearance of the first region (10) as it changes with viewing angle is associated with the appearance of the third region (50) as it changes with viewing angle.

8. The anti-counterfeiting coding element according to claim 1, characterized in that: The first functional layer (20) and / or the second functional layer (70) comprises at least one of a metal layer, a dielectric layer and a magnetic layer.

9. The anti-counterfeiting coding element according to claim 8, characterized in that: The first functional layer (20) and / or the second functional layer (70) is a single metal layer; or The first functional layer (20) and / or the second functional layer (70) is a single dielectric layer; or The first functional layer (20) and / or the second functional layer (70) are multi-layer dielectric layers; or The first functional layer (20) and / or the second functional layer (70) are formed by stacking a metal layer, a dielectric layer, and a metal layer.

10. The anti-counterfeiting coding element according to claim 1, characterized in that: The first region (10) and the second region (30) have different anti-counterfeiting properties.

11. The anti-counterfeiting coding element according to claim 10, characterized in that: The difference between the first region (10) and the second region (30) includes at least one of a difference in appearance, a difference in light transmittance, and a difference in magnetism.

12. The anti-counterfeiting coding element according to any one of claims 1 to 11, characterized in that: The coding pattern includes at least one of numbers, letters, barcodes, and QR codes.

13. The anti-counterfeiting coding element according to claim 1, characterized in that: When there are multiple anti-counterfeiting coding elements, the coding patterns of at least two of the anti-counterfeiting coding elements are different.

14. The anti-counterfeiting coding element according to claim 13, characterized in that: The coding pattern can be customized.

15. The anti-counterfeiting coding element according to any one of claims 1 to 11, characterized in that: The second region (30) further comprises the undulating structure layer (60), and the hollowing index of the undulating structure layer (60) in the second region (30) is different from that of the undulating structure layer (60) in the third region (50).

16. The anti-counterfeiting coding element according to any one of claims 1 to 11, characterized in that: The second region (30) is continuously disposed around the peripheries of the first region (10) and the third region (50).

17. A method for manufacturing an anti-counterfeiting coding element, characterized in that: The anti-counterfeiting coding element according to any one of claims 1 to 16 is manufactured by the manufacturing method of the anti-counterfeiting coding element, and the manufacturing method of the anti-counterfeiting coding element comprises: A wavy structure layer (60) is formed on a substrate (100), wherein the hollowing index of the first region (10), the portion of the second region (30) close to the first region (10), and the third region (50) is smaller than the hollowing index of the second region (30) close to the third region (50); Forming a functional layer; forming a protective layer (80); After forming the protective layer (80), placing the structure in an atmosphere capable of reacting with the protective layer (80) and the functional layer until the functional layer located in the second region (30) is partially or completely removed; After the functional layer is formed, the functional layer on a portion of the second region (30) close to the first region (10) is removed using a light beam and / or a particle beam.

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